Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2023   22:35:31   (   0.01,-137.00) (  -0.14,-137.69)   78.93                80
 11/23/2023   22:14:07   (   0.01,-137.00) (   0.89,-133.17)  437.00                80
 11/25/2023   10:38:36   (  -0.01,-137.00) (   0.34,-138.43)  163.80                80
 11/26/2023   10:17:12   (  -0.01,-137.00) (  -0.69,-133.91)  351.69                80
 11/27/2023   22:39:09   (   0.01,-136.98) (  -0.51,-139.22)  255.22                80
 11/28/2023   22:23:06   (   0.00,-136.97) (   0.53,-134.69)  259.93                80
 11/30/2023   10:42:14   (   0.00,-136.96) (   0.69,-139.96)  341.97                80
 12/01/2023   10:26:11   (   0.01,-136.95) (  -0.35,-135.44)  172.97                80
 12/02/2023   22:45:27   (  -0.01,-136.92) (  -0.89,-140.73)  434.62                80
 12/03/2023   22:29:24   (  -0.01,-136.91) (   0.15,-136.21)   80.18                80